Quasi-doherty architecture amplifier and method

摘要

An amplifier including a main amplifier circuit and at least one peaking amplifier circuit. The peaking amplifier circuit is selectively operable to operate in combination with the main amplifier circuit. The main amplifier circuit and the peaking amplifier circuit each include an active device operation as an inverse Class-F amplifier element. The main amplifier circuit and the peaking amplifier circuit also each include a combined matching and resonator network coupled with an output of the respective active device so the active device operates as an inverse Class-F device, and a combined matching and resonator network coupled with an input of the respective active device.

主权项

1. An amplifier comprising:
a main amplifier circuit; at least one peaking amplifier circuit, the at least one peaking amplifier circuit being selectively operable to operate in combination with the main amplifier circuit, wherein at least one of the main amplifier circuit and the at least one peaking amplifier circuit includes an active device having an input and an output and operating as an inverse Class-F amplifier, and wherein the at least one of the main amplifier circuit and the at least one peaking amplifier circuit that includes the active device further including a combined matching and resonator network having a line element with an effective electrical length of one-eighth of a wavelength at a fundamental frequency of the amplifier that is coupled at one end with the output of the active device and having a stub element having an effective electrical length of one-eighth of a wavelength at a fundamental frequency that is coupled at another end of the line element; at least one coupler circuit coupled with outputs of the main amplifier circuit and the at least one peaking amplifier circuit to combine amplifier circuit output signals at a coupler first output port; and a coupler second output port terminated with a termination operable for providing a reflection coefficient that is based upon the reflection coefficient at the output of at least one of the main amplifier circuit and the at least one peaking amplifier circuit.